30 seconds is three 10 second wait periods between attempts to reconnect. Following the 3rd reattempt, the capture fails because the window no longer exists. The capture restarts, and succeeds, and then fails again because the window no longer exists. (This may mean the app replaced one window with another).
20:46:50.456: Output 'adv_stream': Reconnecting in 10 seconds..
20:46:50.456: [rtmp stream: 'adv_stream'] Connection to rtmp://live-ord03.twitch.tv/app failed: -2
20:47:10.457: [rtmp stream: 'adv_stream'] Connecting to RTMP URL rtmp://live-ord03.twitch.tv/app...
20:47:10.478: [rtmp stream: 'adv_stream'] Interface: Qualcomm Atheros AR8162/8166/8168 PCI-E Fast Ethernet Controller (NDIS 6.30) (ethernet, 100 mbps)
20:47:10.482: The connection is being blocked by a firewall or other security software (EACCES).
20:47:10.482: Output 'adv_stream': Reconnecting in 10 seconds..
20:47:10.482: [rtmp stream: 'adv_stream'] Connection to rtmp://live-ord03.twitch.tv/app failed: -2
20:47:50.483: [rtmp stream: 'adv_stream'] Connecting to RTMP URL rtmp://live-ord03.twitch.tv/app...
20:47:50.484: [rtmp stream: 'adv_stream'] Interface: Qualcomm Atheros AR8162/8166/8168 PCI-E Fast Ethernet Controller (NDIS 6.30) (ethernet, 100 mbps)
20:47:50.486: The connection is being blocked by a firewall or other security software (EACCES).
20:47:50.486: Output 'adv_stream': Reconnecting in 10 seconds..
20:47:50.486: [rtmp stream: 'adv_stream'] Connection to rtmp://live-ord03.twitch.tv/app failed: -2
20:48:02.516: [game-capture: 'wow'] capture window no longer exists, terminating capture
20:48:02.518: [game-capture: 'wow'] capture stopped
20:49:10.487: [rtmp stream: 'adv_stream'] Connecting to RTMP URL rtmp://live-ord03.twitch.tv/app...
20:49:10.639: [rtmp stream: 'adv_stream'] Interface: TAP-Windows Adapter V9 (ethernet, 1000 mbps)
20:49:12.385: [rtmp stream: 'adv_stream'] Connection to rtmp://live-ord03.twitch.tv/app successful
20:49:21.435: [game-capture: 'wow'] attempting to hook process: WowClassic.exe
20:49:21.441: [game-capture: 'wow'] using helper (compatibility hook)
20:49:21.444: [game-capture: 'wow'] hook not loaded yet, retrying..
20:49:24.448: [game-capture: 'wow'] attempting to hook process: WowClassic.exe
20:49:24.474: [game-capture: 'wow'] d3d11 shared texture capture successful
20:49:24.486: [game-capture: 'wow'] shared texture capture successful
23:11:26.250: [game-capture: 'wow'] capture window no longer exists, terminating capture
23:11:26.252: [game-capture: 'wow'] capture stopped